PROBLEM TO BE SOLVED: To provide directional light control means which monitors a short circuit state while suppressing heat generation of driving means for driving a directional light.SOLUTION: A display device M for a vehicle is a directional light control device comprising: a winker lamp 11 which displays an operational state of a direction indicator; driving means 2 which outputs a first electric current A1 to the winker lamp 11, and outputs a first voltage V1 proportional to the first electric current A1; and control means 5 which outputs a switching signal SS, which causes to switch on/off an output of the first electric current A1, to the driving means 2, and determines a state of the winker lamp 11 based on a state of the switching signal SS and the first voltage V1. The control means 5 changes an output of switching switch SS to a periodic signal Oy of off of a first time P1 and on of a second time P2 shorter than the first time P1 when determining that the winker lamp 11 short-circuits during switching on of the switching signal SS.SELECTED DRAWING: Figure 2
【課題】 方向指示灯を駆動する駆動手段の発熱を抑制しつつ短絡状態を監視する方向指示灯の制御手段を提供する。【解決手段】 本発明の一実施形態である車両用表示装置Mは、方向指示器の動作状態を表示するウィンカランプ11と、ウィンカランプ11に第1電流A1を出力すると共に第1電流A1に比例した第1電圧V1を出力する駆動手段2と、駆動手段2に第1電流A1の出力をオン/オフさせる切替信号SSを出力すると共に切替信号SSの状態と第1電圧V1とに基づいてウィンカランプ11の状態を判定する制御手段5と、を備えた方向指示灯の制御装置であって、制御手段5は、切替信号SSをオンさせているときにウィンカランプ11が短絡したと判定すると、切替信号SSの出力を第1時間P1のオフと第1時間P1よりも短い第2時間P2のオンの周期信号Cyに切り替える。【選択図】 図2
DIRECTIONAL LIGHT CONTROL DEVICE
方向指示灯の制御装置
2017-05-25
Patent
Electronic Resource
Japanese
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein |
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